Prepare the glasses by running a lime wedge around the rims and dipping them in kosher salt.

In a high-speed blender, combine frozen cherries, tequila, lime juice, triple sec, agave syrup, and ice cubes. Blend on high until smooth and slushy.

Taste the mixture and adjust sweetness or tartness as needed, then blend briefly to mix any adjustments.

Carefully pour the margarita mixture into the prepared glasses.

Garnish each margarita with a lime wedge.

Serve your margarita immediately, ideally with a straw.